---
product_id: 2056822
title: "MIDI Expander for Keith McMillen Instruments"
brand: "keith mcmillen instruments"
price: "€ 31.03"
currency: EUR
in_stock: false
reviews_count: 13
url: https://www.desertcart.ie/products/2056822-midi-expander-for-keith-mcmillen-instruments
store_origin: IE
region: Ireland
---

# Standalone power for KMI controllers, no PC needed Includes 2m & 5m USB cables for versatile connectivity 5-pin MIDI In & Out for vintage & modern gear MIDI Expander for Keith McMillen Instruments

**Brand:** keith mcmillen instruments
**Price:** € 31.03
**Availability:** ❌ Out of Stock

## Summary

> 🎶 Unlock your MIDI universe—vintage vibes meet modern mastery!

## Quick Answers

- **What is this?** MIDI Expander for Keith McMillen Instruments by keith mcmillen instruments
- **How much does it cost?** € 31.03 with free shipping
- **Is it available?** Currently out of stock
- **Where can I buy it?** [www.desertcart.ie](https://www.desertcart.ie/products/2056822-midi-expander-for-keith-mcmillen-instruments)

## Best For

- keith mcmillen instruments enthusiasts

## Why This Product

- Trusted keith mcmillen instruments brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Plug & Play Ready:** Comes with all essential USB cables and power plug for instant setup and jam sessions.
- • **True Standalone Power:** Power your KMI devices independently—ditch the computer and stay in control anywhere.
- • **Tailored for KMI Ecosystem:** Optimized compatibility with SoftStep, 12 Step, QuNeo, QuNexus, and K-Mix ensures flawless performance.
- • **Lightweight & Durable Design:** Compact stainless steel build that’s rugged enough for the road but light enough to carry everywhere.
- • **Seamless Vintage-to-Modern MIDI Bridge:** Connect your KMI controller effortlessly to classic synths and samplers with 5-pin MIDI ports.

## Overview

The Keith McMillen Instruments MIDI Expander is a compact, stainless steel device that powers and connects KMI controllers to both vintage and modern MIDI hardware via 5-pin MIDI In & Out. It includes essential USB cables and a power plug, enabling standalone use without a computer. Compatible with key KMI products like SoftStep, 12 Step, QuNeo, QuNexus, and K-Mix, it’s the perfect bridge for musicians seeking seamless integration across generations of gear.

## Description

The midi expander enables your kmi controller to connect to hardware devices via 5-pin MIDI.

Review: Allows you to use a KMI MIDI controller with vintage synthesizers and samplers - I use this MIDI expander to connect my KMI 12-Step foot controller (also recommended!) to a Roland SP sampler pad, which has the old-fashioned multi-pin MIDI input. It works seamlessly with these two devices, which were probably manufactured at least 20 years apart. Be warned that it only works with KMI controllers (or so it says, I haven't tested it with any other brand MIDI controllers). It's lightweight but sturdy and worked flawlessly right out of the box.
Review: Works great - It works great, but seemed over priced.

## Features

- 5 pin MIDI In & Out enables communication with hardware devices
- Powers your KMI controller and enables standalone use without a computer
- Includes 2 meter A to B USB cable, power plug, and 5 meter A to B mini-USB cable
- Compatible with SoftStep, 12 Step, QuNeo, QuNexus, and K-Mix.
- The Keith McMillen Instruments MIDI Expander is a must have add-on that enables you to control your MIDI world.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B004A908TU |
| Best Sellers Rank | #103,876 in Musical Instruments ( See Top 100 in Musical Instruments ) #74 in Computer Recording MIDI Interfaces |
| Color Name | Teal |
| Compatible Devices | SoftStep, 12 Step, QuNeo, QuNexus, K-Mix |
| Customer Reviews | 3.5 3.5 out of 5 stars (67) |
| Date First Available | October 20, 2010 |
| Hardware Interface | USB |
| Is Discontinued By Manufacturer | No |
| Item Weight | 2.4 ounces |
| Item model number | K-701 |
| Material Type | Stainless Steel |
| Operating System | Windows |
| Product Dimensions | 4 x 1.5 x 1.25 inches |
| Supported Software | SoftStep |

## Product Details

- **Brand:** Keith McMillen Instruments
- **Compatible Devices:** SoftStep, 12 Step, QuNeo, QuNexus, K-Mix
- **Connectivity Technology:** USB
- **Number of Channels:** 16
- **Supported Software:** SoftStep

## Images

![MIDI Expander for Keith McMillen Instruments - Image 1](https://m.media-amazon.com/images/I/61PzN+RLJYL.jpg)
![MIDI Expander for Keith McMillen Instruments - Image 2](https://m.media-amazon.com/images/I/812+C9x6cOL.jpg)
![MIDI Expander for Keith McMillen Instruments - Image 3](https://m.media-amazon.com/images/I/91Ec-2DwcVL.jpg)
![MIDI Expander for Keith McMillen Instruments - Image 4](https://m.media-amazon.com/images/I/81maOSQnP8L.jpg)
![MIDI Expander for Keith McMillen Instruments - Image 5](https://m.media-amazon.com/images/I/31juLIA+J9L.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Allows you to use a KMI MIDI controller with vintage synthesizers and samplers
*by I***Y on January 24, 2021*

I use this MIDI expander to connect my KMI 12-Step foot controller (also recommended!) to a Roland SP sampler pad, which has the old-fashioned multi-pin MIDI input. It works seamlessly with these two devices, which were probably manufactured at least 20 years apart. Be warned that it only works with KMI controllers (or so it says, I haven't tested it with any other brand MIDI controllers). It's lightweight but sturdy and worked flawlessly right out of the box.

### ⭐⭐⭐⭐ Works great
*by M***L on November 29, 2024*

It works great, but seemed over priced.

### ⭐⭐⭐ Necessary but dumb
*by A***C on December 24, 2022*

It works as described, but shame on KMI for making a propriety box to decode USB to MIDI. Nickel and dime mentality. The MIDI ports on my unit are not aligned with the metal cutout holes and some wider-sheathed cables are difficult to get in and out because they rub against the edge of the metal cutout.

## Frequently Bought Together

- Keith McMillen - K-701 MIDI Expander Keyboard Production Station
- M-Audio SP-2 - Universal Sustain Pedal with Piano Style Action, The Ideal Accessory for MIDI Keyboards, Digital Pianos, Electronic Keyboards & More
- Cable Matters 2-Pack 5 Pin DIN MIDI Cable, 5 Pin MIDI Cable - 1.8m

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*Product available on Desertcart Ireland*
*Store origin: IE*
*Last updated: 2026-03-06*